J1050106 Effects on absorption performance of acoustic panel configurations for turbo fan jet engine

Abstract

Effects on absorption performance of acoustic panel configurations for turbo fan jet engine were examined experimentally. Acoustic panels for test were made from plastics, by 3D printer. The experiments were carried out in the transfer function method using two microphones. Experimental result indicates triangle or square cross-sectional shape holes in the surface sheet were more effective than the circle shape concerning the sound absorption coefficient.